Quote - The key is this: I make sure to start the effort with my coloured halo well over the part of the material that is actually showing, and not on the skin area, then drag that halo into the area of skin slowly, pulling material through - this is painful to describe, rather easy to do - all the while holding down the shift key. Never let go of the shift key - that's the trick, that, and moving slowly - and start with focusing on material that is already showing through. Also, I set my numbers really low for Pull: .01 to .03, tops... that way, I don't have much effect on material that is already showing.

Thanks very much for the additional pointers, I seem to be getting the hang of it now! I didn't want to start on a part that I didn't want affected, but as you say, if the Magnitude is set low that doesn't matter. It's easier to control that way, too.